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<a name="gst-plugins-base-plugins-timeoverlay"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-timeoverlay.top_of_page"></a>timeoverlay</span></h2>
<p>timeoverlay</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-timeoverlay.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody><tr>
<td class="property_type"><a class="link" href="gst-plugins-base-plugins-timeoverlay.html#GstTimeOverlayTimeLine" title="enum GstTimeOverlayTimeLine"><span class="type">GstTimeOverlayTimeLine</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-plugins-timeoverlay.html#GstTimeOverlay--time-mode" title="The “time-mode” property">time-mode</a></td>
<td class="property_flags">Read / Write</td>
</tr></tbody>
</table></div>
</div>
<a name="GstTimeOverlay"></a><div class="refsect1">
<a name="gst-plugins-base-plugins-timeoverlay.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-base-plugins-timeoverlay.html#GstTimeOverlay-struct" title="struct GstTimeOverlay">GstTimeOverlay</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gst-plugins-base-plugins-timeoverlay.html#GstTimeOverlayTimeLine" title="enum GstTimeOverlayTimeLine">GstTimeOverlayTimeLine</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-timeoverlay.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
                <span class="lineart">╰──</span> GstBaseTextOverlay
                    <span class="lineart">╰──</span> GstTimeOverlay
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-timeoverlay.description"></a><h2>Description</h2>
<p>This element overlays the buffer time stamps of a video stream on
top of itself. You can position the text and configure the font details
using the properties of the <span class="type">GstBaseTextOverlay</span> class. By default, the
time stamp is displayed in the top left corner of the picture, with some
padding to the left and to the top.</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1</pre></td>
        <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> <span class="gtkdoc opt">-</span>v videotestsrc <span class="gtkdoc opt">!</span> timeoverlay <span class="gtkdoc opt">!</span> autovideosink</pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
Display the time stamps in the top left corner of the video picture.</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1</pre></td>
        <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> <span class="gtkdoc opt">-</span>v videotestsrc <span class="gtkdoc opt">!</span> timeoverlay halignment<span class="gtkdoc opt">=</span>right valignment<span class="gtkdoc opt">=</span>bottom text<span class="gtkdoc opt">=</span><span class="string">&quot;Stream time:&quot;</span> shaded<span class="gtkdoc opt">-</span>background<span class="gtkdoc opt">=</span><span class="keyword">true</span> font<span class="gtkdoc opt">-</span>desc<span class="gtkdoc opt">=</span><span class="string">&quot;Sans, 24&quot;</span> <span class="gtkdoc opt">!</span> autovideosink</pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
Another pipeline that displays the time stamps with some leading
text in the bottom right corner of the video picture, with the background
of the text being shaded in order to make it more legible on top of a
bright video background.</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.102.7.7.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
            <a class="link" href="gst-plugins-base-plugins-plugin-pango.html#plugin-pango">pango</a>
          </td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Tim-Philipp Müller &lt;tim@centricular.net&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Filter/Editor/Video</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.102.7.7.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>video_sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-raw, format=(string){ BGRx, RGBx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, I420, YV12, AYUV, YUY2, UYVY, v308, Y41B, Y42B, Y444, NV12, NV21, A420, YUV9, YVU9, IYU1, GRAY8 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> video/x-raw(ANY), format=(string){ I420, YV12, YUY2, UYVY, AYUV, VUYA, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, Y210, Y410, NV12, NV21, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10BE, I420_10LE, I422_10BE, I422_10LE, Y444_10BE, Y444_10LE, GBR, GBR_10BE, GBR_10LE, NV16, NV24, NV12_64Z32, A420_10BE, A420_10LE, A422_10BE, A422_10LE, A444_10BE, A444_10LE, NV61, P010_10BE, P010_10LE, IYU2, VYUY, GBRA, GBRA_10BE, GBRA_10LE, BGR10A2_LE, GBR_12BE, GBR_12LE, GBRA_12BE, GBRA_12LE, I420_12BE, I420_12LE, I422_12BE, I422_12LE, Y444_12BE, Y444_12LE, GRAY10_LE32, NV12_10LE32, NV16_10LE32, NV12_10LE40 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-raw, format=(string){ BGRx, RGBx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, I420, YV12, AYUV, YUY2, UYVY, v308, Y41B, Y42B, Y444, NV12, NV21, A420, YUV9, YVU9, IYU1, GRAY8 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> video/x-raw(ANY), format=(string){ I420, YV12, YUY2, UYVY, AYUV, VUYA, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, Y210, Y410, NV12, NV21, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10BE, I420_10LE, I422_10BE, I422_10LE, Y444_10BE, Y444_10LE, GBR, GBR_10BE, GBR_10LE, NV16, NV24, NV12_64Z32, A420_10BE, A420_10LE, A422_10BE, A422_10LE, A444_10BE, A444_10LE, NV61, P010_10BE, P010_10LE, IYU2, VYUY, GBRA, GBRA_10BE, GBRA_10LE, BGR10A2_LE, GBR_12BE, GBR_12LE, GBRA_12BE, GBRA_12LE, I420_12BE, I420_12LE, I422_12BE, I422_12LE, Y444_12BE, Y444_12LE, GRAY10_LE32, NV12_10LE32, NV16_10LE32, NV12_10LE40 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-timeoverlay.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-timeoverlay.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstTimeOverlay-struct"></a><h3>struct GstTimeOverlay</h3>
<pre class="programlisting">struct GstTimeOverlay;</pre>
<p>Opaque timeoverlay data structure.</p>
</div>
<hr>
<div class="refsect2">
<a name="GstTimeOverlayTimeLine"></a><h3>enum GstTimeOverlayTimeLine</h3>
<div class="refsect3">
<a name="GstTimeOverlayTimeLine.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GST-TIME-OVERLAY-TIME-LINE-BUFFER-TIME:CAPS"></a>GST_TIME_OVERLAY_TIME_LINE_BUFFER_TIME</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-TIME-OVERLAY-TIME-LINE-STREAM-TIME:CAPS"></a>GST_TIME_OVERLAY_TIME_LINE_STREAM_TIME</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-TIME-OVERLAY-TIME-LINE-RUNNING-TIME:CAPS"></a>GST_TIME_OVERLAY_TIME_LINE_RUNNING_TIME</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-TIME-OVERLAY-TIME-LINE-TIME-CODE:CAPS"></a>GST_TIME_OVERLAY_TIME_LINE_TIME_CODE</p></td>
<td> </td>
<td> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-timeoverlay.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstTimeOverlay--time-mode"></a><h3>The <code class="literal">“time-mode”</code> property</h3>
<pre class="programlisting">  “time-mode”                <a class="link" href="gst-plugins-base-plugins-timeoverlay.html#GstTimeOverlayTimeLine" title="enum GstTimeOverlayTimeLine"><span class="type">GstTimeOverlayTimeLine</span></a></pre>
<p>What time to show.</p>
<p>Flags: Read / Write</p>
<p>Default value: buffer-time</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-timeoverlay.see-also"></a><h2>See Also</h2>
<p><span class="type">GstBaseTextOverlay</span>, <a class="link" href="gst-plugins-base-plugins-clockoverlay.html#GstClockOverlay"><span class="type">GstClockOverlay</span></a></p>
</div>
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